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| author | Andrew Waterman <waterman@s144.Millennium.Berkeley.EDU> | 2010-11-02 16:00:37 -0700 |
|---|---|---|
| committer | Andrew Waterman <waterman@s144.Millennium.Berkeley.EDU> | 2010-11-21 16:54:33 -0800 |
| commit | 4daccfc1cf46ee25b73bc39dcc89844d696c6ec9 (patch) | |
| tree | dc1733b8fa81b204a71c411a4df90b6cffe76a0f /pk/entry.S | |
| parent | 664411d5e692b487409dfb1c2ede9e214dd15602 (diff) | |
| download | riscv-pk-4daccfc1cf46ee25b73bc39dcc89844d696c6ec9.zip riscv-pk-4daccfc1cf46ee25b73bc39dcc89844d696c6ec9.tar.gz riscv-pk-4daccfc1cf46ee25b73bc39dcc89844d696c6ec9.tar.bz2 | |
[xcc, sim, pk] link register is now x1
Diffstat (limited to 'pk/entry.S')
| -rw-r--r-- | pk/entry.S | 99 |
1 files changed, 50 insertions, 49 deletions
@@ -15,56 +15,57 @@ save_tf: # write the trap frame onto the stack # save gprs - STORE $x2,2*REGBYTES($x1) - mfpcr $x2,ASM_CR(PCR_K1) - STORE $x2,1*REGBYTES($x1) # $x1 is actually in $PCR_K1 - STORE $x3,3*REGBYTES($x1) - STORE $x4,4*REGBYTES($x1) - STORE $x5,5*REGBYTES($x1) - STORE $x6,6*REGBYTES($x1) - STORE $x7,7*REGBYTES($x1) - STORE $x8,8*REGBYTES($x1) - STORE $x9,9*REGBYTES($x1) - STORE $x10,10*REGBYTES($x1) - STORE $x11,11*REGBYTES($x1) - STORE $x12,12*REGBYTES($x1) - STORE $x13,13*REGBYTES($x1) - STORE $x14,14*REGBYTES($x1) - STORE $x15,15*REGBYTES($x1) - STORE $x16,16*REGBYTES($x1) - STORE $x17,17*REGBYTES($x1) - STORE $x18,18*REGBYTES($x1) - STORE $x19,19*REGBYTES($x1) - STORE $x20,20*REGBYTES($x1) - STORE $x21,21*REGBYTES($x1) - STORE $x22,22*REGBYTES($x1) - STORE $x23,23*REGBYTES($x1) - STORE $x24,24*REGBYTES($x1) - STORE $x25,25*REGBYTES($x1) - STORE $x26,26*REGBYTES($x1) - STORE $x27,27*REGBYTES($x1) - STORE $x28,28*REGBYTES($x1) - STORE $x29,29*REGBYTES($x1) - STORE $x30,30*REGBYTES($x1) - mfpcr $x2,ASM_CR(PCR_K0) - STORE $x2,31*REGBYTES($x1) # $ra is actually in $PCR_K0 + STORE $x3,3*REGBYTES($x2) + STORE $x4,4*REGBYTES($x2) + STORE $x5,5*REGBYTES($x2) + STORE $x6,6*REGBYTES($x2) + STORE $x7,7*REGBYTES($x2) + STORE $x8,8*REGBYTES($x2) + STORE $x9,9*REGBYTES($x2) + STORE $x10,10*REGBYTES($x2) + STORE $x11,11*REGBYTES($x2) + STORE $x12,12*REGBYTES($x2) + STORE $x13,13*REGBYTES($x2) + STORE $x14,14*REGBYTES($x2) + STORE $x15,15*REGBYTES($x2) + STORE $x16,16*REGBYTES($x2) + STORE $x17,17*REGBYTES($x2) + STORE $x18,18*REGBYTES($x2) + STORE $x19,19*REGBYTES($x2) + STORE $x20,20*REGBYTES($x2) + STORE $x21,21*REGBYTES($x2) + STORE $x22,22*REGBYTES($x2) + STORE $x23,23*REGBYTES($x2) + STORE $x24,24*REGBYTES($x2) + STORE $x25,25*REGBYTES($x2) + STORE $x26,26*REGBYTES($x2) + STORE $x27,27*REGBYTES($x2) + STORE $x28,28*REGBYTES($x2) + STORE $x29,29*REGBYTES($x2) + STORE $x30,30*REGBYTES($x2) + STORE $x31,31*REGBYTES($x2) + + mfpcr $x3,ASM_CR(PCR_K0) + STORE $x3,1*REGBYTES($x2) # $x1 is in $PCR_K0 + mfpcr $x3,ASM_CR(PCR_K1) + STORE $x3,2*REGBYTES($x2) # $x2 is in $PCR_K1 # get sr, epc, badvaddr, cause - mfpcr $x2,ASM_CR(PCR_SR) # sr - STORE $x2,32*REGBYTES($x1) - mfpcr $x3,ASM_CR(PCR_EPC) # epc - STORE $x3,33*REGBYTES($x1) - mfpcr $x2,ASM_CR(PCR_BADVADDR) # badvaddr - STORE $x2,34*REGBYTES($x1) - mfpcr $x2,ASM_CR(PCR_CAUSE) # cause - STORE $x2,35*REGBYTES($x1) + mfpcr $x3,ASM_CR(PCR_SR) # sr + STORE $x3,32*REGBYTES($x2) + mfpcr $x4,ASM_CR(PCR_EPC) # epc + STORE $x4,33*REGBYTES($x2) + mfpcr $x3,ASM_CR(PCR_BADVADDR) # badvaddr + STORE $x3,34*REGBYTES($x2) + mfpcr $x3,ASM_CR(PCR_CAUSE) # cause + STORE $x3,35*REGBYTES($x2) # get insn - and $x3,$x3,~3 - lw $x2,0($x3) - STORE $x2, 36*REGBYTES($x1) + and $x4,$x4,~3 + lw $x3,0($x4) + STORE $x3, 36*REGBYTES($x2) - jr $ra + ret .end save_tf .globl pop_tf @@ -121,11 +122,11 @@ pop_tf: # write the trap frame onto the stack .ent trap_entry trap_entry: mtpcr $ra,ASM_CR(PCR_K0) - mtpcr $x1,ASM_CR(PCR_K1) - law $x1,stack_top-320 + mtpcr $x2,ASM_CR(PCR_K1) + law $x2,stack_top-320 jal save_tf - move $sp,$x1 - move $a0,$x1 + move $sp,$x2 + move $a0,$x2 ei jal handle_trap unimp |